<template>
	<el-container>
		<!-- 头部 -->
		<el-header>
			<div class="box1">
				<img src="../../public/logo.png" alt="" />
				<span>电商后台管理系统</span>
			</div>
			<el-button type="infor" @click="logout">退出</el-button>
		</el-header>
		<!-- 主体 -->
		<el-container>
			<!-- 左侧 -->
			<el-aside :width="isCollapse ? '64px' : '200px'">
				<div class="toggle-button" @click="toggleCollaose">
					|||
				</div>
				<el-menu background-color="#333744" text-color="#fff" active-text-color="#ffd04b" :collapse="isCollapse"
				 :collapse-transition="false" router :default-active="activePath">
					<!-- 一级菜单 -->
					<el-submenu :index="item.id + ''" v-for="item in menulist" :key="item.id">
						<!-- 一级菜单的模板 -->
						<template slot="title">
							<!-- 图标 -->
							<i :class="iconsObj[item.id]"></i>
							<span>{{item.authName}}</span>
						</template>

						<el-menu-item :index="'/' + subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/' + subItem.path)">
							<template slot="title">
								<!-- 图标 -->
								<i class="el-icon-menu"></i>
								<span>{{subItem.authName}}</span>
							</template>
						</el-menu-item>
					</el-submenu>

				</el-menu>
			</el-aside>
			<!-- 右侧 -->
			<el-main>
				<router-view />
			</el-main>
		</el-container>
	</el-container>
</template>

<script>
	export default {
		name: "home",
		data() {
			return {
				//左侧菜单数据
				menulist:[],
				//图标
				iconsObj: {
					125:'el-icon-s-check',
					103:'el-icon-finished',
					101:'el-icon-s-goods',
					102:'el-icon-s-promotion',
					145:'el-icon-pie-chart'
				},
				// 控制折叠展开开关
				isCollapse:false,
				//被激活的链接
				activePath:''
			}
		},
		created() {
			this.getMenuList(),
			this.activePath = window.sessionStorage.getItem('activePath')
		},
		methods: {
			logout() {
				window.sessionStorage.clear()
				this.$router.push('.login')
				this.$message.success('已退出')
			},
			//获取所有菜单
			async getMenuList() {
				const {data:res} = await this.$http.get('menus')
				if(res.meta.status !== 200) return this.$message.error(res.meta.msg)
				this.menulist = res.data
				
			},
			// 点击按钮菜单的折叠与展开
			toggleCollaose() {
				this.isCollapse = !this.isCollapse
			},
			//保存链接的激活状态
			saveNavState(activePath) {
				window.sessionStorage.setItem('activePath',activePath)
				this.activePath = activePath
			}
				
		}
	}
</script>

<style scoped="scoped">
	.el-header {
		background-color: #373d41;
		display: flex;
		justify-content: space-between;
		align-items: center;
		color: #fff;
		font-size: 20px;
	}

	.box1 {
		display: flex;
		align-items: center;
	}

	.el-header img {
		width: 50px;
		height: 50px;
		margin-right: 15px;
	}

	.el-container {
		height: 100%;
	}

	.el-aside {
		background-color: #333744;
	}
	.el-aside .el-menu {
		border: none;
	}

	.el-main {
		background-color: #eaedf1;
	}
	.toggle-button {
		background-color: #4a5064;
		font-size: 10px;
		line-height: 24px;
		color: #fff;
		text-align: center;
		letter-spacing: 0.2em;
		cursor: pointer;
	}
</style>
